LT3593
LT3593
PRODUCTION1MHz White LED Driver with Output Disconnect and One Pin Current Programming
- Part Models
- 4
- 1ku List Price
- Starting From $2.17
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Overview
- Drives Up to Ten White LEDs from a 3V Supply
- One Pin Shutdown and Current Programming
- LEDs Disconnected in Shutdown
- 32:1 Linear Brightness Control Range
- VIN Range: 2.7V to 5.5V
- ±5% Output Current Accuracy at Full Scale
- Low Shutdown Current: 3μA
- 1MHz Switching Frequency
- Requires Only 1μF Output Capacitor
- Low Profile 6-Lead DFN (2mm × 2mm × 0.75mm) and 6-Lead SOT-23 Packages
The LT3593 is a step-up DC/DC converter designed to drive up to ten white LEDs in series from a Li-Ion cell. Series connection of the LEDs provides identical LED currents and eliminates the need for ballast resistors. The device features a unique high side LED current sense that enables the part to function as a “one wire current source” where the low side of the LED string can be returned to ground anywhere.
Additional features include output disconnect in shutdown, open LED protection and 1-pin shutdown/LED current control. The CTRL pin is toggled to adjust the LED current via an internal counter and a 5-bit DAC.
The LT3593 switches at 1MHz, allowing the use of tiny external components. Constant frequency switching results in low input noise and a small output capacitor. The LT3593 is available in the 6-lead DFN (2mm × 2mm) as well as the 6-lead SOT-23 packages.
Applications
- Cell Phones
- Digital Cameras
- PDAs, Handheld Computers
- MP3 Players
- GPS Receivers
Documentation
Data Sheet 1
User Guide 1
Technical Articles 1
Device Drivers 1
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| LT3593EDC#TRMPBF | 6-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3593EDC#TRPBF | 6-Lead DFN (2mm x 2mm w/ EP) | ||
| LT3593ES6#TRMPBF | 6-Lead TSOT-23 | ||
| LT3593ES6#TRPBF | 6-Lead TSOT-23 |
This is the most up-to-date revision of the Data Sheet.
Software Resources
Device Drivers 1
Evaluation Software 0
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Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| Circuit Monitors 1 | ||
| LT2940 | PRODUCTION | Power and Current Monitor |
Evaluation Kits
LT3593DCB | 1MHz White LED Driver with Output Disconnect
Resources
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